Candidate 4's attempt
Question A6
A branch line is 15km long with a single track throughout its length.
a) Explain a suitable method of working for a half-hourly passenger service between the stations at the beginning and end of the line, describing how safety is maintained.
[5 Marks]
A new siding is to be provided 3km from the beginning of the line. Two freight trains a day are required to make a return trip from the mainline to the siding, whilst the passenger service is operating.
b) What risks does this new service introduce? [5 Marks]
c) Describe two possible methods of working; one that describes a comprehensive technical solution to control the risks and the other which relies on less technology. Compare the relative costs of the two methods and comment upon their suitability. [15 Marks]
Question A6
A branch line is 15km long with a single track throughout its length.
a) Explain a suitable method of working for a half-hourly passenger service between the stations at the beginning and end of the line, describing how safety is maintained.
[5 Marks]
A new siding is to be provided 3km from the beginning of the line. Two freight trains a day are required to make a return trip from the mainline to the siding, whilst the passenger service is operating.
b) What risks does this new service introduce? [5 Marks]
c) Describe two possible methods of working; one that describes a comprehensive technical solution to control the risks and the other which relies on less technology. Compare the relative costs of the two methods and comment upon their suitability. [15 Marks]
PJW